Re: SETI public: forwarded on behalf of Amanda Baker

[Rashid Faizullin <rtf@univer.omsk.su>]

>

>
> Rashid Faizullin
>
> >planet near H209458 -
> >Basic data:
> >          M:      0.69 ± 0.05 MJ
> >          Radius:
> >               1.54 ± 0.18 RJ (Mazeh et al. 2000)
> >               1.42 ± 0.08 RJ (Henry et al., 1999)
> >          Semi-major axis:      ~ 0.045 AU
> >http://www.obspm.fr/encycl/HD209458.html
> >
> >Note  there are no hydrogen of course but density of the planet
> >is equal to 1/5 Jupiters density !
> >May be it hollow ?
>
>         Why do you say, there is no hydrogen? Remembering that
> Jupiter probably has a rocky core of about 10 Earth masses, I
> suggest that you re-do your calculations, assuming that H209458b
> is at a much higher temperature than Jupiter due to its proximity
> to its primary star, and predominantly consists of hydrogen and
> helium in primordial proportions.
>
>         Thanks,
>
>         Amanda Baker
>
> (teaching a course in Planetary Science this semester...)
>
>

Dear Amanda

Of course, at first there  was hydrogen and helium in stars proportion
but it was times when H209458 was only a 'child'. But now on
surface of H209458b (planet)  T at least >=1000K so gases on atmosphere
must be  very hot may be hoter than 6000K. And note H209458b is not a
star
or brown dwarf it's so 2-nd cosmic velocity is near 15-20 km/sec so very
hot
gases atoms as hydrogen and helium must be eliminated from atmosphere in
very early times.

For example Earth hydrogen (note with very low %) eliminated now to
space
from Sun's light and Sun cosmic rays action but now there no 'primitive'
hydrogen
Now  it's only product for water dissipation and also this water are
'rocky core' product. 'Decontamination'.

I aplogize for my English but I hope so sense is clear.

Maybe I'm wrong so I 'm not specialist on geophysics and
I'll be very glad on specialist reply.

WBR
R.Faizullin